Sand-tempering machine.



.J. J. VALIQUBTT & G. F. ROUSH.

SAND TEMPERING MAGHINB.

APPLICATION FILED JUNE 30, 1910.

978,96 1 Patented DGGL'ZO, 1910.

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J. J. VALIQUETT & C. F. ROUSH.

SAND TEMPERING MACHINE.

APPLIGATION FILED JUNE 30, 1910.

J. J. VALIQUETT & C. F. ROUSH. SAND TEMPERING MACHINE. APPLICATION FILED JUNE 30, 1910.

978,96 1 Patented Dec. 20, 1910.

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UNITED STATES PATENT OFFICE.

JOSEPH J. VALIQUETT AND CHARLES F. RQUSH, OF TOLEDO, OHIO.

=,SAND-TEMPERING MACHINE.

Specification of Letters Patent.

Patented Dec. 20, 1910.

Application filed June 30, 1910. Serial No. 569,654.

will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

Our invention relates to sand working machines, and has particular reference to a machine adapted for use in foundries, or other places where sand is employed as a molding medium, for mixing and acting on the sand after a mold-ing operation to restore its temper.

The object of our invention is to provide an improved and highly efficient machine of this character which is simple, strong and durable in its construction, easy and rapid in its operation, and capable of acting on sand in an improved and eflicient manner to quickly restore it to its original temper, separate small pieces of castings or other foreign matter therefrom, and deliver it to a predetermined point for subsequent use.

The invention is fully described in the following specification, and while in its broader aspect it is susceptible of numerous modi-' fications, a preferred embodiment thereof is illustrated in the accompanying drawings, in which,-

Figure 1' is a plan view thereof with a portion broken away. Fig. 2 is a side elevation thereof. Fig. 3 is a side elevation of the sand elevating wheel, griddle-box and-associated parts,.anol Fig. 4 is a cross-section on the-line w a in Fig. 1 with parts in full.

Referring to the drawings, 1, 1 designate the side-beams and 2,2 the end beams of a rectangular or other suitable form of frame, 3 spindles projecting therefrom, and l and 5 the front and rear sets of wheels, which are mounted on such spindles and support the frame. The front spindles 3 are-pivoted for horizontal swinging movements in brackets (3 carried by the frame sides and have steering arms 7 projecting from their inner ends and connected by a rod 8 for steering movements in unison, which movements may be inner side of the ring 26, as shown.

imparted to the rod in any suitable or well known manner.

On the rear portion of the frame is provided a platform 9 on which the engineer motor 10 is mounted. The motor shaft 11 carries a wheel 12 at one end, which wheel has a lateral annular flange at its periphery in inner and outer frictional contact with the small wheels 13 and 14, respectively, to drive the shafts 15 and 16 on which they are mounted. The shaft 15 is j ournaled in suitable bearings 17, carried by the frame, and has a'pinion 18 thereon in mesh with a gear 19 on a shaft 20 journaled in bearings 21 of the frame. The ends of this shaft project beyond the frame sides and carry pinions 22, 22 in mesh with gears 23, 23 carried by the rear drive wheels 5..

In advance of the platform 9 and between theframe sides 1 is disposed a sand elevating wheel 24, which comprises the disk 25 at one end, the ring 26 at the opposite end, and the sand lifting blades 27, which connect .and are secured at their ends to the inner Side of the disk 25 at its edge and to the The disk 25 has its hub 25 loosely mounted on a hollow spindle 28, which projects inwardly from a standard 29 rising from the adjacent side beam 1, see Fig. 1. Carried by and at the outer sides of the disk 25 and ring 26 concentric to the axes thereof and laterally spaced therefrom are rings 30, 30, the outer peripheries of which are toothed to form sprockets for the drive-chains 31, 31 to engage. The end of the elevating wheel opposed to the disk 25 is braced for rotary movements by a. set of idler rolls 32, which are peripherally grooved to receive the inner edge of the associated sprocket-ring and are carried by a triangular frame 33 rising from the associated side beam 1-. The blades 27 are preferably spirally arran ed and transversely.curved as shown to facilitate the picking up and elevating of sand from a subjacent surface. At a predetermined height in the upward movement of the blades 27 the sand elevated thereby falls inwardl therefrom by gravity cally mounted within the spindle 28, and has its outer end supported by the spring standards 37 which use from the associated beam 1, and are secured at their upper ends to the outer pan end. The spring standards 37 act on the pan 35 to cause the outer end of the plunger 36 to yieldingly bear againsta camsurface disk 38, which is shown as being located within the spindle 28 and 'has its shaft carrying a sprocket-wheel 39 and journaled in the bearing standards 29 and 40. Upon arotation of the cam-disk, which is effected as hereinafter described, it cooperates with the springs 37 to effect a vibration of the pan 35, as is apparent. The bottom of the pan-35 tapers downwardly from its inner end and is substantially V-shaped in crosssection to facilitate a discharge of sand therefrom through the outlet 41 in the outer end thereof and into the centrifugal fan or blower 42, which is carried by the frame side adjacent such outlet The delivery pipe 43 of the blower may be directed to any desired point of discharge. 44 designates a hood which is carried by the pan 35 and extendsover the inner hub end of the wheel-disk 25. The tailings from the screened sand pass from the outer end of the screen 34 through out-lets'45, and drop to the-ground or other surface over which the machine is operating, 01' may be caught if desired. A -V-shaped part 46 at the outer end of the screen serves to direct the tailings to such outlets.

The rotary parts of the fan or blower 42 are driven fromithe shaft 16 through the medium of the train of gears 47 48 designates a sand cutting and mixing drum, which is mounted between the frame sides 1 in advance of the elevating wheel 24 and has its lower peripheral edge in a plane with the lower edge of such wheel, as shown. This drum has a plurality of blades 49 disposed around the periphery thereof .and arranged in successive rows extending longitudinally thereof, with the blades of alternate rows oppositely inclined relative to planes transversely intersecting the drum, as shown. The arranging of the blades 49 in this manner causes them to strike the sand acted on with a slanting blow, and also causes the blades of the successive rows to throw the sand in opposite'directions longitudinally of the drum, due to the oppositely inclining of the blades of such rows, thus effecting a thorough mixing and working of the sand to restore its temper.

The mechanism for driving the wheel 24 and drum 48 is shown in the present instance as consisting of the sprocket chain 50, which communicates power from a sprocket 51 on the motor-shaft ll'to a sprocket 52, the shaft 53 of which is journaled in a bearing 54 at the forward end of the associated frame side 1 and carries a gear 55 on its inner end. The gear 55 meshes wlth a gear 56 on a shaft 57,

l which is journaled in the frame transversely thereof, and carries a pair of sprocketwheels 58 for the chains 31 which drive the sprockets 30 on the wheel 24. The drum 48 is driven by one of the chains 31 passing over a sprocket wheel 59 carried at one end thereof, see Fig. 2. The mechanism just described is adapted to drive the drum 48 and wheel 24 in opposite directions, as indicated by the arrows, Fig. 2, the drum revolving in a direction to catch and pick up the sand thrown thereto. The sprocket 39 on the shaft with the cam-disk 38 is driven by the chain 50, which passes thereover, see Figs. 1 and 4.

In the operation of our machine, it is run over the surface on which the sand to be acted on is disposed, the'sand being first moistened to the desired extent. As the drum 48 passes thereover the sand is cut up and thrown back and forth by the blades 49 to effect a thorough mixing and working of the same to restore its temper and is then thrown by such blades back toward the elevating wheel 24. The revolving of this wheel causes the blades 27 to scoop the sand from the floor or other surface over which it is operating and elevate it to a point where it will fall by gravity from the inr l'er edges of the blades'and drop upon the griddle or screen 34. The vibratory movement of the screen, due to the action of the-rapidly rotating cam-disk 38 upon the plunger 36, causes the sand to pass through the screen into the pan 35 and the tailings to work through the discharge outlet 45. The sand which enters the pan 35 is directed through the outlet opening 41 into the blower 42 by which it is directed through the delivery pipe 43 to any desired point.

It is apparent that our machine provides a simple and efiicient means for tempering sand, cleaning it of small casting parts or other foreign matter and delivering it to a desired point for subsequent use.

We wish it understood that our invention is not limited to any specific construction or arrangement of the parts except in so far as such limitations arespecified in the claims.

we claim as new anddesire to secure by Letters Patent, is,

1. In a machine of the class described, a sand mixin member for screening sand, and means associated with said screening means for delivering the screened sand to a predetermined point.

combination of a set of rotatable members arranged in tandem and rotatable in opposite dlrections, one member serving to mix sand over which it passes and the other serv- Having thus described our invention what member, a rotatable sand elevating mem r, means within said elevating 190 2. In a machine of the class described, the

ing to elevate the mixed sand, a griddle asso- 136 ciated with said elevated member for screening the sand elevated thereby, and means for I 3. In an apparatus of the class described, the combination of a frame, supporting wheels for such frame, a sand cutting and mixing drum and a sand elevating member rotatably carried by said frame one in advance of the other, means for rotating said drum and member, and means associated with the elevating Wheel for cleaning the sand elevated thereby.

4:. In an apparatus of the class described, the combination of a wheel frame, sand mixing means and sand elevating means carried by such' frame, sand screening and conveying means associated with said elevating means and mechanismfor operating said several means.

5. In an apparatus of ,the class described, the combination of a wheeled frame, a sand mixing drum carried by said frame, a rotary sand elevating member carried by said frame and adapted to discharge sand'within the member at a predetermined point in its elevation, sand screening means disposed within the member, means for conveying the screened sand to a predetermined point, and mechanism for operating the drum member and conveying means.

6. In an apparatus of the class described, a frame, sand mixingmea-ns carried by said frame, a hollow sand elevating wheel carried by the frame and having parts adapted to elevate sand to a predetermined height and then to ermit it to drop within the wheel, a grid le for catching and screening the sand as it drops within the wheel, means associated with the griddle for conveying the screened sand to a predetermined point.

7 In an apparatus of the class described,

- the combination of a frame, sand mixing means carried thereby, a hollow sand elevating wheel carried by the frame and having blades for picking up and elevating sand to a predetermined height and then to per- 'mit its discharge by gravity within the wheel, a griddle for catching and screening the sand within the wheel, means for vibrating the griddle, means for conveying the screened sand to a predetermined point, and mechanism for operating the sand mixing means and the Wheel.

8. In an apparatus of the class described, the combination of a frame, a rotary drum carried thereby and having peripheral blades arranged to effect a mixing of matter, a sand elevating member rotatably carried by said frame adjacent said drum'and adapted to permit the elevated. matter to drop therein at a predetermined point in its elevation, vibratory screening means ,for catching the matter dropped from said .member, means for delivering the screened sand to a predetermined point, and mechanism for operating such mixer, elevating member and vibratory means.

9. In an apparatus of the class described, a sand mixing member comprising a drum,

and rows'of blades arranged around such drum and inclined relative to the plane of rotation thereof, alternate rows of such blades, inclining in opposite directions.

10. In a machine of the class described, a movable frame, a rotary sand mixing drum and a sand elevating wheel mounted in said frame one in advance of the other and fotatabl'e upwardly toward each' other, the

drum having inclined peripheral blades and the wheel being hollow and having. peripherally disposed sand lifting blades, means within the wheel for screening the elevated sand and conveying it to a predetermined point, and mechanism for operating said rum.

In testimony whereof, we have hereunto signed our names to this specification in the presence of two subscribin witnesses.

JOSEPH J. ALIQUETT. CHARLES F. ROUSH. Witnesses:

C. W. OWEN, E. E. THoMAs. 

